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Page 28 of 48 <br /> eu rof i ns Quality Control - Spike/Spike duplicate <br /> Calscietict <br /> Conestoga-Rovers &Associates Date Received: 05130/15 <br /> 6520 Corporate Drive Work Order: 15-05-2299 <br /> Indianapolis, IN 46278-2915 Preparation: EPA 50300 <br /> Method: EPA 8015B (M) <br /> Project: 085972-23A-5702 Page 3 of 8 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MSIMSD Batch Number <br /> 15.05-2040-4 Sample Solid GC 24 05128115 0610111514:13 1506015006 <br /> 15-05.2040-4 Matrix Spike Solid GC 24 05/28115 06101115 14:47 1506015006 <br /> 15-05.2040-4 Matrix Spike Duplicate Solid GC 24 05/28/15 06101115 16:21 1506015006 <br /> Parameter Sample Spike MS MS MSD MSD %Rec.CL RPD RPD CL QUalifiers <br /> Conc. Added Conc. %Rec. Conc. %Rec. <br /> TPH as Gasoline ND 10.00 8.403 84 8.455 85 48-114 1 0-23 <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoln Way,Garden Grove,CA 92841-1427 TEL:(714)895-5494 • FAX: (714)894-7501 <br />